Matt Brezina is co-founder and CEO of Sincerely, a mobile gifting startup whose mission is to help the world be more thoughtful. Postagram, Sincerely’s first product, enables users to send real postcards made from photos taken with Instagram. Sincerely's Ink Cards application offers hundreds of greeting card designs that easily can be personalized and mailed from a mobile phone. Sesame, Sincerely's newest service, makes it easy to mail a themed gift set in a beautiful box. The Sincerely network has more than 1.4 million members who have sent cards and gifts to over 900,000 homes. Sincerely was founded in 2011 and is backed by $3 million in venture capital. 

Brezina also co-founded Xobni, an email software company that makes your inbox and address book smarter. Xobni, and its Smartr product suite, discovers all the people you’ve ever called, emailed, or messaged, and creates complete social profiles that are instantly searchable. Xobni’s application for Microsoft Outlook, which has been downloaded more than 10 million times, was lauded “the next generation of social networking” by Bill Gates in 2008. Xobni has appeared in The New York Times, The Wall Street Journal, and numerous other publications. Xobni was founded in 2006 and is backed by $40 million in venture capital.

Brezina is also an active angel investor, having invested in companies such as Dropbox, Voxer, Edison Jr., Rescale, 15Five, Orchestra, and more. He graduated from Penn State in 2003 with a B.S. in electrical engineering.